Water resistant hatch and hood
Water retention/detention structure
Water turbulence producing air bubbling system for boat docks
Water wave absorber
Water-impermeable sealing mat consisting substantially of a...
Water-tight bore shaft foundation
Waterproof composite coating and process of manufacture
Waterproof covering device, especially for terraces, and...
Waterproofing barrier
Waterproofing system for hydraulic structures with rigid...
Waterstop for monolith joints and method
Watertight manhole insert
Watertight raising band for manhole
Waterway
Waterway pollution control apparatus
Wave and tide actuated electrical generating apparatus
Wave attenuator device
Wave dissipating blocks for the covering embarkment and...
Wave dissipating wall
Wave energy converter